<button matButton id="simple" [matBadge]="simpleContent()">Simple</button>
<button matButton
    id="overlapping"
    matBadge="O"
    [matBadgeOverlap]="overlap()">Overlapping</button>
<button
    matButton
    id="disabled"
    matBadge="D"
    [matBadgeDisabled]="disabled()">Disabled</button>
